Machine tool programming system



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Nov. 5, 1963 R. N. KNOSP ETAL 3,109,329

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1. IN A NUMERICALLY CONTROLLED MACHINE TOOL SYSTEM, THE COMBINATION OF A MACHINE TOOL HAVING A PLURALITY OF COMPONENTS ADAPTED FOR AUTOMATIC OPERATION IN RESPONSE TO PREDETERMINED ELECTRICAL INPUT SIGNALS CARRYING DIGITAL INFORMATION AND A CROSS BAR SWITCH HAVING A PLURALITY OF VERTICAL CONTACT UNITS, EACH OF SAID COMPONENTS HAVING A PLURALITY OF INPUT LEADS, EACH OF SAID VERTICAL CONTACT UNITS COMPRISING A PLURALITY OF HORIZONTAL CONTACT SETS, EACH OF THE HORIZONTAL CONTACT SETS OF A VERTICAL CONTACT UNIT COMPRISING SPRING URGED ELECTRICAL CONTACTS CORRESPONDING TO ONE DIGIT AND BEING CONNECTED TO A DIFFERENT INPUT LEAD OF ONE OF SAID MACHINE TOOL COMPONENTS, A PLURALITY OF INTERSECTING HOLD BARS AND SELECT BARS ASSOCIATED WITH SAID HORIZONTAL CONTACT SETS, SAID CROSS BAR SWITCH FURTHER 